Henneberry, whom neighbors now call a hero, is the one who first discovered Tsarnaev hiding in his boat in the back yard, and alerted authorities.

"There was hundreds of rounds of shots going off," said Pizzuto as he recounts the Friday night gunfight on Franklin that preceded Tsarnaev's arrest.

Moments before that, Henneberry had stepped outside for a smoke, and realized something wasn't quite right about his 24-foot boat.

"He noticed something in the back -- some blocking that he used in the winter time was moved all over the place," Pizzuto told NewsCenter 5. "And he said, 'What's this about?' So he went in the garage and got the ladder."

Henneberry staged the ladder against his boat and climbed it.

"He has a white cover over a clear cover. He lifted that cover up, and he started opening his zipper cover. He saw blood," Pizzuto said. "And then he saw the body, and he jumped off the ladder. He didn't even touch the steps; he just jumped down, ran into the house and got on the phone."

Officials then engaged Tsarnaev in that epic gunfight, and eventually got him out of the boat.

The 19-year-old was brought to Beth Israel Deaconess, where he's being treated for wounds to his neck and lower body.

He was charged Monday while at the hospital with using weapons of mass destruction.

Henneberry, according to Pizzuto, is still trying to collect himself.

"They let him get back into the house last night -- David and Beth," Pizzuto said. "They told them they can't go out the back door, they can't go out the back yard."

Henneberry's boat, his prized possession, is now riddled with bullet holes and still sits in the back yard, where authorities are combing it for further evidence.

Pizzuto said several boat companies and individuals have called Henneberry to offer him a free boat.